View Single Post
  #176  
Old 15-04-2019, 07:13 PM
strongmanmike's Avatar
strongmanmike (Michael)
Highest Observatory in Oz

strongmanmike is offline
 
Join Date: May 2006
Location: Canberra
Posts: 17,150
Quote:
Originally Posted by gregbradley View Post
Perhaps the difference between 1260mm and 3 metres.

Greg.
Yeah I know but it is image scale not focal length that counts, so I operate at 0.83"/pix so pretty fine and as fine as many other much longer focal length systems using bigger pixels...?

I get it if your PA was a fair way off but not within 2-3 arc min..?

Mike
Reply With Quote